linux-kernel - Re: [PATCH rcu 11/12] torture: Flush printk() buffers before powering off

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 21 Jun 2022 10:15:29 +0206
From:   John Ogness <john.ogness@...utronix.de>
To:     paulmck@...nel.org
Cc:     rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com, rostedt@...dmis.org
Subject: Re: [PATCH rcu 11/12] torture: Flush printk() buffers before
 powering off

On 2022-06-20, "Paul E. McKenney" <paulmck@...nel.org> wrote:
> But given Petr's and your recent changes that are now in mainline, is
> this still really needed?  (Tests now pass without it, though tests can
> of course be misleading.)

If all you are interested is if your rcutorture testing was successful,
then I would keep this change. Then, no matter what the kernel does
afterwards, you have your test results.

However, the kernel should correctly shutdown and it should flush the
kernel buffers on shutdown or crash. (It is a kernel bug otherwise.) So
if you also want to implicitly test this (non-rcutorture) functionality,
then you should not use this patch.

John Ogness